Portal of the upper adit
Johanna Mine, Bobenthal, Dahner Felsenland, Südwestpfalz, Rhineland-Palatinate, Germany
Portal of the upper adit, with a zinc-bearing vein exposed to the right. The sandstones owe their reddish colours to disseminations of iron oxides. Where lead and zinc minerals have settled, the iron oxides were displaced, leaving typically leached zones. The vein appears to have been worked recently by some irresponsible individuals, causing a ...
© Peter Haas